Margaery Tyrell is a fictional character in the A Song of Ice and Fire series of epic fantasy novels by American author George R. R. Martin, and its television adaptation Game of Thrones, where she is portrayed by English actress Natalie Dormer.

Having wed herself to three kings over the course of the narrative, she becomes an influential political figure in Westeros, which often brings her into conflict with her chief rival at court, Cersei Lannister.

One of the wealthiest and most powerful families in Westeros, House Tyrell is actually guided by the willful Lady Olenna, Mace's mother, who has arranged Margaery's marriages and mentors her in politics and court intrigue.

Margaery Tyrell is not a point of view character in the novels, so her actions are witnessed and interpreted through the eyes of Sansa Stark and Cersei Lannister.

[citation needed] Margaery first appears in A Clash of Kings (1998), having married Renly Baratheon and supporting his claim to the Iron Throne.

Margaery, newly married to Renly, reveals that she is aware of his romantic relationship with her brother and is willing to work around his desires to secure their alliance and her position.

Through several shrewd PR moves towards the city's poor and orphaned, Margaery becomes extremely popular with the common people as their future Queen.

Cersei intends for the zealously fervent religious order to seize and condemn Loras for his homosexual behavior, thus tricking Margaery into perjuring herself by denying knowledge of his proclivities.

Jaime Lannister leads the Tyrell army on the Sept of Baelor to secure Margaery's release, but it is revealed that she has been absolved, by convincing Tommen to forge an alliance between the Faith and the crown.

[citation needed] Sean T. Collins writing for Rolling Stone feels that author Martin has been vague about Margaery's ambition and political cunning and describes her as a "mute mystery whose motives and level of involvement in the game of thrones are unknown [by A Clash of Kings]".

Madeline of Feministing considers Margaery "an ambitious politico as well as being a damn good actress – she plays the part of the tragic, virginal twice-widow so well that almost no one suspects that she is dead set on winning the throne.

"[5] Similarly, Danica Liu writing for The Duke Chronicle describes Margaery as "subtle and graceful" and like most of the women in A Song of Ice and Fire, deals in the currencies of power.

"[8] In "Valar Dohaeris", Diana Huang of UC Riverside's Highlander News appreciated the development of Margaery's character and called her "self aware and quick-witted" and believes she has the power to wreak havoc in King's Landing.